Kazuhiro Ouchi / AkiLedMatrix

Akizuki 32x16 dot LED Matrix unit (K-03735) control library.

秋月電子の32×16ドットLEDマトリクス表示装置(K-03735)を制御するライブラリです。
バッファの内容をそのままLEDマトリクス装置に送ります。
LEDマトリクス表示装置は最大４台まで接続できるので、接続台数を必ず指定してください。（この台数でバッファのサイズを計算しています。）
行間表示は1msのdelayを入れています。パラメタで変更可能です。
このライブラリの呼び出し元は基本的にwhile()でループしてください。
初めてのライブラリなのでメンバ関数もドキュメントとかまだ最低限です。
おかしなところはぜひコメントをください。

表示例は以下ページをご覧ください。

akiledmatrix.cpp@0:bf351a2fa565, 2013-02-17 (annotated)

Committer:
kanpapa
Date:
Sun Feb 17 12:25:21 2013 +0000
Revision:
0:bf351a2fa565
Child:
1:2705be49d5e2
beta release.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kanpapa 0:bf351a2fa565 1 #include "akiledmatrix.h"
kanpapa 0:bf351a2fa565 2 #include "mbed.h"
kanpapa 0:bf351a2fa565 3
kanpapa 0:bf351a2fa565 4 AkiLedMatrix::AkiLedMatrix(PinName sin1,
kanpapa 0:bf351a2fa565 5 PinName sin2,
kanpapa 0:bf351a2fa565 6 PinName sin3,
kanpapa 0:bf351a2fa565 7 PinName clock,
kanpapa 0:bf351a2fa565 8 PinName latch,
kanpapa 0:bf351a2fa565 9 PinName strobe) :
kanpapa 0:bf351a2fa565 10 _sin1(sin1),
kanpapa 0:bf351a2fa565 11 _sin2(sin2),
kanpapa 0:bf351a2fa565 12 _sin3(sin3),
kanpapa 0:bf351a2fa565 13 _clock(clock),
kanpapa 0:bf351a2fa565 14 _latch(latch),
kanpapa 0:bf351a2fa565 15 _strobe(strobe) {
kanpapa 0:bf351a2fa565 16 // initrize
kanpapa 0:bf351a2fa565 17 _sin1 = 0;
kanpapa 0:bf351a2fa565 18 _sin2 = 0;
kanpapa 0:bf351a2fa565 19 _sin3 = 0;
kanpapa 0:bf351a2fa565 20 _clock = 0;
kanpapa 0:bf351a2fa565 21 _latch = 1;
kanpapa 0:bf351a2fa565 22 _strobe = 0; // LED ON
kanpapa 0:bf351a2fa565 23 }
kanpapa 0:bf351a2fa565 24
kanpapa 0:bf351a2fa565 25 void AkiLedMatrix::display(const unsigned char *buffer, const int speed, const int maxled) {
kanpapa 0:bf351a2fa565 26 int bufp = 0; // buffer pointer
kanpapa 0:bf351a2fa565 27
kanpapa 0:bf351a2fa565 28 while(1) { // loop
kanpapa 0:bf351a2fa565 29 for (int y = 0; y < 16; y++){
kanpapa 0:bf351a2fa565 30 uint16_t led1_data = buffer[bufp + 0] * 256 + buffer[bufp + 1];
kanpapa 0:bf351a2fa565 31 uint16_t led2_data = buffer[bufp + 2] * 256 + buffer[bufp + 3];
kanpapa 0:bf351a2fa565 32
kanpapa 0:bf351a2fa565 33 for (int x = 0; x < 16; x++){
kanpapa 0:bf351a2fa565 34 if (x == y) {
kanpapa 0:bf351a2fa565 35 _sin1 = 1;
kanpapa 0:bf351a2fa565 36 } else {
kanpapa 0:bf351a2fa565 37 _sin1 = 0;
kanpapa 0:bf351a2fa565 38 }
kanpapa 0:bf351a2fa565 39
kanpapa 0:bf351a2fa565 40 // LED1
kanpapa 0:bf351a2fa565 41 _sin2 = led1_data & 0x01;
kanpapa 0:bf351a2fa565 42 led1_data = led1_data >> 1;
kanpapa 0:bf351a2fa565 43
kanpapa 0:bf351a2fa565 44 // LED2
kanpapa 0:bf351a2fa565 45 _sin3 = led2_data & 0x01;
kanpapa 0:bf351a2fa565 46 led2_data = led2_data >> 1;
kanpapa 0:bf351a2fa565 47
kanpapa 0:bf351a2fa565 48 wait_us(2); // tSETUP min:1.2us
kanpapa 0:bf351a2fa565 49
kanpapa 0:bf351a2fa565 50 // set clock
kanpapa 0:bf351a2fa565 51 _clock = 1;
kanpapa 0:bf351a2fa565 52 wait_us(1); // twCLK min:1.0us
kanpapa 0:bf351a2fa565 53 _clock = 0;
kanpapa 0:bf351a2fa565 54 }
kanpapa 0:bf351a2fa565 55
kanpapa 0:bf351a2fa565 56 // set latch
kanpapa 0:bf351a2fa565 57 _latch = 0;
kanpapa 0:bf351a2fa565 58 wait_us(2); // twLAT min:2.0us
kanpapa 0:bf351a2fa565 59 _latch = 1;
kanpapa 0:bf351a2fa565 60
kanpapa 0:bf351a2fa565 61 wait_ms(speed);
kanpapa 0:bf351a2fa565 62
kanpapa 0:bf351a2fa565 63 bufp = bufp + 4;
kanpapa 0:bf351a2fa565 64 if (bufp > (maxled * 16)) {
kanpapa 0:bf351a2fa565 65 bufp = 0;
kanpapa 0:bf351a2fa565 66 }
kanpapa 0:bf351a2fa565 67 }
kanpapa 0:bf351a2fa565 68 }
kanpapa 0:bf351a2fa565 69 }